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2009-07-22Add support for registering 'Checker' objects with GRExprEngine.Ted Kremenek
Add a 'previsit' stage (that dispatches to registered Checkers) when evaluating the effects of CallExprs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76794 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Add new 'Checker' and 'CheckerVisitor' classes, which represent a more powerfulTed Kremenek
interface to plug in domain-specific checker logic than the current GRSimpleAPICheck interface. The new 'Checker' interface can actually generate new nodes, allowing it to modify the state and refine the analysis (which GRSimpleAPIChecks could not). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76793 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Add support for 'PreStmt' program points to GRCoreEngine and GRStmtNodeBuilder.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76792 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Add 'PreStmt' program point. This will be used to represent checking forTed Kremenek
preconditions (in GRExprEngine) before the statement itself is evaluated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76791 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Implement operator= for ExplodedNodeSet.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76790 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Move bug reporter "visitors" to their own file and make them part of the publicTed Kremenek
BugReporter API. No real functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76760 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Add some documentation, to make it so the next person doens't selectMike Stump
the wrong function. :-) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76752 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Restructure ProgramPoint to have the 'Kind' value be its own instanceTed Kremenek
variable. This gives us much more flexibility with defining more ProgramPoints, which is the direction we are heading. The removal of various bit-mangling of pointers also cleans up the logic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76721 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Update stale comment.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76644 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Fix PR 4594 by refactoring almost all casting logic from GRExprEngine::VisitCastTed Kremenek
to SValuator::EvalCast. In the process, the StoreManagers now use this new cast machinery, and the hack in GRExprEngine::EvalBind to handle implicit casts involving OSAtomicCompareAndSwap and friends has been removed (and replaced with logic closer to the logic specific to those functions). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Remove the ASTContext parameter from Entity::getPrintableName().Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76546 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Change the semantics for Entity.Argyrios Kyrtzidis
Entity can now refer to declarations that are not visible outside the translation unit. It is a wrapper of a pointer union, it's either a Decl* for declarations that don't "cross" translation units, or an EntityImpl* which is associated with the specific "visible" Decl. Included is a test case for handling fields across translation units. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76515 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-20Add yet more analysis for CFGs involving conditionals that are actually ↵Mike Stump
constant. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76500 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-20Remove an apparently unused forward class decl.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-20Update DataflowSolver to handle the case where a successor/predecessor blockTed Kremenek
could be NULL. This allows the solver to handle optimized CFGs where branches can be determined during CFG-construction to be infeasible. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76452 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-20Enhance GRBranchNodeBuilderImpl (part of GRCoreEngine) to understand the caseTed Kremenek
where the true or false CFGBlock* for a branch could be NULL. This will handle the case where we can determine during CFG construction that a branch is infeasible. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76450 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-19Improve debug pretty-printing for ObjCIVarRegions.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76380 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Per offline discussion with Steve Naroff, add back Type::getAsXXXType() methodsTed Kremenek
until Doug Gregor's Type smart pointer code lands (or more discussion occurs). These methods just call the new Type::getAs<XXX> methods, so we still have reduced implementation redundancy. Having explicit getAsXXXType() methods makes it easier to set breakpoints in the debugger. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Rename Entity::getName() to Entity::getPrintableName() to make its purposeZhongxing Xu
more obvious. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76167 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17CallGraph:Zhongxing Xu
- add IfStmt visitor. - print information only when a function has callee. Otherwise its ASTContext map is NULL. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76156 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add member template 'Type::getAs<T>', which converts a Type* to a respective T*.Ted Kremenek
This method is intended to eventually replace the individual Type::getAsXXXType<> methods. The motivation behind this change is twofold: 1) Reduce redundant implementations of Type::getAsXXXType() methods. Most of them are basically copy-and-paste. 2) By centralizing the implementation of the getAs<Type> logic we can more smoothly move over to Doug Gregor's proposed canonical type smart pointer scheme. Along with this patch: a) Removed 'Type::getAsPointerType()'; now clients use getAs<PointerType>. b) Removed 'Type::getAsBlockPointerTypE()'; now clients use getAs<BlockPointerType>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Move the source-level CFG from libAST to libAnalysis.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Move RegionStoreManager over to using newTed Kremenek
ValueManager::makeArrayIndex()/convertArrayIndex() methods. This handles yet another crash case when reasoning about array indices of different bitwidth and signedness. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75884 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Two changes:Ted Kremenek
(1) Moved the SValuator object from GRExprEngine to ValueManager. This allows ValueManager to use the SValuator when creating SVals. (2) Added ValueManager::makeArrayIndex() and ValueManager::convertToArrayIndex(), two SVal creation methods that will help RegionStoreManager always have a consistent set of SVals with the same integer size and type when reasoning about array indices. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75882 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Commit the initial implementation of call graph building.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75873 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15More test cases revealed that the logic in StoreManager::InvalidateRegion() ↵Ted Kremenek
needs more finesse when handling the invalidation of pointers. Pointers that were invalidated as integers could later cause problems for clients using them as pointers. It is easier for us to model a symbolic value as a pointer rather than modeling a non-symbolic value as a pointer. This patch causes: - StoreManager::InvalidateRegion() to not used the casted type of a region if it would cause a pointer type to be invalidated as a non-pointer type. - Pushes RegionStore::RetrieveElement() further by handling retrievals from symbolic arrays that have been invalidated. This uses the new SymbolDerived construct that was recently introduced. The result is that the failing test in misc-ps-region-store-x86_64.m now passes. Both misc-ps-region-store-x86_64.m and misc-ps-region-store-i386.m contain a test case that motivated this change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75730 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Introduced the notion of a "derived symbol" using the class SymbolDerived.Ted Kremenek
SymbolDerived allows us to model symbolic values that are related to other symbols via a region hierarchy. For example, SymbolDerived can be used to model individual values of a symbolic array. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14Introduce Type::isAnyPointerType() and convert all clients (suggested by Chris).Steve Naroff
I don't love the name, however it simplifies the code and is a worthwhile change. If/when we come up with a better name, we can do a search/replace. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75650 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14Instead of recovering from a wrong invalidation, this patch aims to Zhongxing Xu
invalidate the region correctly. It uses the cast-to type to invalidate the region when available. To avoid invalid cast-to type like 'void*' or 'id', region store now only records non-generic casts of regions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75580 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Tidy pretty-printing for SVals, using 'dump()' instead of 'printStdErr()', ↵Ted Kremenek
and implementing operator<< support for llvm::raw_ostream. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75560 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Change pretty-printing API for SymExprs and MemRegions to use a naming ↵Ted Kremenek
convention and style similar to other elements in Clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75548 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-10This patch includes a conceptually simple, but very intrusive/pervasive change. Steve Naroff
The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches. This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic. By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time. Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75314 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-10Rename potentially ambiguous member template 'getRegion' to 'getSubRegion' ↵Ted Kremenek
to hopefully resolve template lookup ambiguities on some compilers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-10Switch BasicStoreManager to use the new CastRegion implementation by default,Ted Kremenek
and replace the 'clang-cc' option '-analyzer-store=basic-new-cast' with '-analyzer-store=basic-old-cast'. We'll keep the old CastRegion implementation around for a little while for regression testing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75209 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08Fix: <rdar://problem/7034511> ValueManager::makeIntVal(uint64_t X, QualType ↵Ted Kremenek
T) should return a 'Loc' when 'T' is a pointer git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75062 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Unbreak build by including header.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Make 'BasicStoreManager' + 'NewCastRegion' testable from the command line ↵Ted Kremenek
using '-analyzer-store=basic-new-cast'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74865 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Move the new 'CastRegion' implementation from RegionStoreManager to StoreManagerTed Kremenek
(its superclass). This will allow us to experiment with using the new CastRegion with BasicStoreManager, and gradually phase out the old implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74851 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Further cleanup of region invalidation code. No functionality change.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74816 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06AllocaRegion and SymbolicRegion are both boundable.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74815 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Start to gradually move region invalidation code into store manager.Zhongxing Xu
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74812 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-04CompoundLiteralRegion is boundable when it is not in the file scope.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74788 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-04StringRegion is not boundable.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74786 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03remove utility methods that are not very useful.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74762 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02Replace guarded calls in RegionStoreManager toTed Kremenek
ValueManager::getRegionValueSymbolVal() with unguarded calls to ValueManager::getRegionValueSymbolValOrUnknown(). This changes centralizes the decision of what values to symbolicate in SymbolManager rather than having it scatter in RegionStoreManager. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74730 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02StoreManagers: Use 'hasGlobalsStorage()' and 'hasParametersStorage()' instead ofTed Kremenek
directly consulting if a VarDecl is an implicit or actual parameter, a global, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02Add a separate MemSpaceRegion for function/method arguments passed on the stack.Ted Kremenek
This will simplify the logic of StoreManagers that want to specially reason about the values of parameters. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74715 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02Remove commented methods. Add MemRegion::printStdErr().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30add utility method.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74521 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30add utility methods.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74520 91177308-0d34-0410-b5e6-96231b3b80d8
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